Leonardo DiCaprio is too busy with his career to have children.

The ‘Revolutionary Road’ actor - whose on/off relationship with model Bar Refaeli ended last year - insists he hasn’t yet fulfilled his potential as an actor but admits his priorities may change eventually.

The 35-year-old star said: “I’m not that old, my biological clock isn’t ticking yet. I’d like to leave it to fate if and when I’m going to be a father. A part of me has too many professional plans to even seriously consider it. When I see the children in my family though, the idea of having children doesn’t seem too far-fetched.”

While Leonardo’s main focus is his career, he admitted he experiences feelings of loneliness when he is away working on movie sets.

He explained: “In this business nothing is as dangerous and as feared as loneliness. You shoot films in the most remote areas of the world; you’re separated from your family and your friends. And at some point you’re in your hotel room looking at yourself in the mirror and you realise how lonely you are and how far you are from leading a normal life. That is quite a punch in the gut.”

In order to combat his unhappiness, the ‘Shutter Island’ actor does his best to keep all his attention on movies.

When asked how he copes with loneliness, he told Germany’s OK! magazine: “Apart from my phone bill soaring? I generally concentrate on work and push any feelings of yearning away.”